Desiccating-machine.



J. W. STAMP.

DESICCATING MACHINE.

APPLICATION FILED JULY 15. 1918.

Patented Apr. 1 1919.

2 SHEETS-SHEET l.

.J. W. STAMP.

DESiCCATING MACHINE.

APPLlCATION FILED JULY 15. 1918.

1 ,299,254. Patented Apr. 1, 1919.

2 SHEETS-SHEET 2.

JOH1\T W. STAMP, OF MELBOURNE, VICTORIA, AUSTRALIA.

DESICCATING-MACHINE.

Specification of Letters Patent.

Patented Apr. 1, 1919.

Application filed J n15 15, 1918. Serial No. 244,991.

To all whom it may concern:

Be it known that I, JOHN WYNNE STAMP, a subject of the King of GreatBritain, residing at 235 Cardigan street, Melbourne, in the State ofVictoria, Commonwealth of Australia, engineer, have invented a new anduseful Improvement in and Connected with Desiccating-Machines; and I dohereby declare the following to be a full, clear, and exact descriptionof the same.

This invention relates to machines for desiccating materials such asdeleterious substances and non-deleterious materials such as salt andother foods by revolving the same in a vacuum cylinder mounted within afixed container that is heated from a furnace or other like source ofheat. v

The object of the invention is to provide a machine at once efiicientand economical to construct and to run and which shall have means forquickly feeding the materials to the said cylinder, usually whilerevolving, and for readily discharging the dried product. Means are alsoprovided to facilitate the heating of the mass in the cylinder; forwithdrawing and condensing the vapors as same are generated therein andfor avoiding undue pressures within the same.

A further object of the invention is in COIl-r nection with the feedingand discharging means whereby both actions shall be readily andefliciently accomplished. This is pro vided for by arranging thecylinder ends to project slightly beyond the container walls, and byinstalling the feed and vapor discharge pipes at one end of thecylinder, thereby leaving the other end free to accommodate thedischarge door or doors which may vary in shape according torequirements. I

i In carrying the invention into effect, the vacuum cylinder is providedwith deep indentations in the shell and is mounted horizontally, in afixed dry heated container, but having its ends projecting through thewalls of such container. In the ends doors are placed and at one endthere is an ample feed pipe which comesaxially into the cylinder.Contained within this pipe are two smaller pipes or conduits one ofwhich is in connection with the vapor withdrawal means and the vacuumpump outside, and the :other with a" pipe within the cylinder andconnected up to a safety valve outside the same. Such an arrangement ofthe feed and vapor withdrawalmeans atone endof the cylinder leaves theother end free to contain the main door or doors for emptying the sameor through which whole carcasses of dead animals may be introduced.

In the accompanying drawings Figure l is a side sectional elevation ofmy desiccator.

Fig. 2 is a transverse sectional elevation on the line 22 of Fig. 1.This view illustrates the furnace grate and system of lines that havebeen found to work satisfactorily in heating the cylinder.

Fig.3 shows an end elevation of the cylinder from the feed pipe, saidpipe being in section, and

Fig. 4 is a perspective view of part of the cylinder shell constitutinga modification.

The cylinder 4 is provided with a flange 5 at, each end which flangesform treads that run upon and are supported by the rollers 6. Thecylinder is disposed within the container 7 in whichis the furnace 8 andthe stack 9.

- The shell of the cylinder may be provided with deep indentations lpreferably longitudinally placed, in order to provide internal shelvesor ribs, the external surfaces of which shall be in contact with theheat in the container. The internal projections thus formed are intendedto increase the heating surface, to extend the same into the materialand to induce a stirring action in the cylinder, for the purpose offacilitating the process of drying.

I Each end of the; cylinder 4; projects through the container 7 and isprovided with the doors 10 which, being exterior to the container,.arereadily accessible for dischargingthe cylinder. If found desirable onelarge door may be provided in one end of thecylinder through which largebodies, such as the carcasses of animals, may be introduced for thepurpose of reducing the same. I

The ends of the cylinder are truncated cone shaped, as shown in thedrawings, which form has been found useful in that the material, as itcreeps toward the ends as the cylinder revolves, is turned overbackwardintothe body of the same.

At one end of the cylinder the chute 11 is provided which may beintegral with the feed pipe 13 that comes axially into the cylinderthrough a suitable gland for the purpose of charging material thereintoas it revolves, a valve being in the feed. .pipe 13 through the exteriorpipe 17 on the feed pipe 13 to the condenser and vacuum pump (not shownin the drawings), which latter is relied upon to maintain a high degreeof vacuum inthe cylinder and to withdraw for condensation the vaporsgenerated therein.

By disposing the furnace in the manner indicated in the drawings it willbe seen that the cylinder can be discharged from either end into cartsor other receptacles placed below, though I prefer to use the endopposite to the feed for that purpose. The cylinder is rotated by anyconvenient means such as by a small auxiliary engine and belt and pulleyfor actuating the pinion 18 (Fig. 3) that gears with a circular rack 19on the cylinder end.

The feed pipe 13 will be made ample enough to introduce the materials tobe dried and at the same time to accommodate the vapor discharge andblow off conduits. And while I have shown a furnace grate for thepurpose of generating the heat to evaporate the moisture in thematerials I may utilize other sources of dry heat for the purose.

p In operation, the cylinder is charged With the materials to be driedthrough the chute 11 and valve in the pipe 13, the handle 12 beingrocked momentarily to permit of the materials in the chute being drawninto the cylinder, where a high degree of vacuum is maintained. Thevalve is open for so short a time while the material is being chargedthat there need be little or no effect on the vacuum pressure and dryingprocess within the cylinder.

hen the'materials are sufliciently dried the cylinderis stopped and thedoors at the end or ends are opened and the contents removed. If thecylinder be restarted after opening the doors the dried product will bedischarged in a' selfacting way.

The dry heat from the furnace circulates freely around the body but notthe ends of the cylinder and escapes through the chimney stack 9, and asthe vapors are given ofl, same are withdrawn by the vacuum pump throughthe pipes 14: and 17. If these pipes should, from any cause, becomeinoperative, the steam which arises from the drying material will bedischarged through the safety valve 316. 4

This machine has been found useful as a means for drying and deodorizingnight soil and slaughter house refuse to render it fit for use asmanures; for drying out the 'solid ingredients in soup; for drying saltand for other purposes of a like nature. By using a single vacuumcylinder heated from a furnace or other source of dry heat, the processof drying is facilitated and the product can be discharged quicker andin a drier condition and with less expenditure in fuel than is possiblein machines which depend upon steam as the drying agent.

Having now described my invention what I claim as new and desire tosecure by Letters Patent is 1. In a desiccator, a horizontally mountedvacuum cylinder for containing the material tobe dried, a fixed heatedcontainer wherein the cylinder is revolved, means for feeding thematerial to the cylinder as it revolves, means for discharging the driedmaterial through an end or ends of same and for withdrawing andcondensing the vapors therein generated, as herein described.

2. In a desiccator, a horizontally mounted vacuum cylinder, a fixedheated container wherein the cylinder'is revolved, the ends of thecylinder projecting beyond the container walls, and means for feedingthe material to the cylinder as it revolves, for discharging the samewhen dried through said ends and for withdrawing and condensing thevapors therein generated, as set forth.

3. In a desiccator, a horizontally mounted vacuum cylinder, a fixedheated container wherein the cylinder is revolved, the ends to thecylinder projecting through or beyond the container walls, means 111 oneend of the 1 cylinder for feeding the samewhile revolving and forwithdrawing the vapors therefrom and a discharge door or doors in theother end of the cylinder, as herein specified.

4. In a desiccator, a horizontally mounted vacuum cylinder the shell ofwhich is provided with deep indentations, a fixed heated containerwherein the cylinder is revolved, the ends to the cylinder projectingthrough or beyond the container walls, means in one end of the cylinderfor feeding the same while revolving and for withdrawing the vaporstherefrom and a discharge door or doors in the other end of thecylinder, as herein specified.

5. The combination in desiccating apparatus of a vacuum cylinder, afixed heated container Within which the cylinder revolves, the ends tothe cylinder projecting through or beyond the container walls, a door ortus of a vacuum cylinder the shell of which is provided with deepindentations, a fixed heated container within which the cylinderrevolves, the ends to the cylinder projecting through or beyond thecontainer walls, a door or doors in said ends, means for feeding thematerial to the cylinder while revolving and means for withdrawing byway of the material feed pipe the vapors therein generated, asdescribed.

7. The combination in desiccating apparatus of avacuum cylinder, afixedheated container within which the cylinder revolves, the ends to thecylinder projecting through or beyond the container walls, a door ordoors fitted into each of said ends, a. chute and a feed pipe axiallyplaced in one end of the cylinder, and means in the feed pipe forWithdrawing the vapors or alternatively high pressure steam from thecylinder, as and for the purposes set forth.

8. The combination in desiccating apparatus of a. vacuum cylinder theshell of Which is provided With deep indentations, a fixed heatedcontainer within which the cylinder revolves, the ends to the cylinderprojecting through or beyond the container walls a door or doors fittedinto each of said ends, a chute and a feed pipe axially placed in oneend of the cylinder, and means in the feed pipe for withdrawing thevapors or alternatively high pressure steam from the cylinder, as andfor the purposes set forth.

9. The combination in desiccating apparatus of a deeply indented vacuumcylinder, a fixed heated container within which the cylinder revolves,the ends to the cylinder projecting through or beyond the containerwalls, a door or doors fitted into each of said ends, a feed pipeaxially placed in one end of the cylinder and means in the feed pipe forwithdrawing the vapors or alternatively the high pressure steam from thecylinder, as herein described.

10. The combination in desiccating apparatus of a deeply indented vacuumcylinder, a fixed heated container within which the cylinder revolves,the ends to the cylinder projecting through or beyond the containerwalls, a door or doors fitted into each of said ends, a feed pipeaxially placed in one end of the cylinder, a vapor discharge pipe Withinthe cylinder and a steam exhaust pipe also therein With their respectiveconduits in the feed pipe and means on the latter for conducting thevapors to a condenser or alternatively high pressure steam to a safetyvalve, as herein specified.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN W: STAMP.

Witnesses:

P. M. NEWTON, K. SHEEHY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Yatents,

Washington, D. 0.

